FAMILY TROCHILIDAE 257 



that it is specifically distinct. Male and female in aenea are closely 

 similar in color and pattern, with the axillars and under tail coverts 

 cinnamon like the rest of the under surface; they are smaller, and in 

 both the mandible is dark in color. They differ also in being more 

 bronze-green above, and in having a definite cinnamon spot behind the 

 eye. In Glands hirsuta, in the three allied races, typical hirsuta, 

 insularum, and affinis, the female is distinctly brighter colored than 

 males, more cinnamon-rufous on the lower surface, with this color 

 fairly uniform on the foreneck, breast, and sides. Males are darker 

 below, especially on the sides. In both the mandible is clearly light in 

 color, being honey yellow, and the under tail coverts are more or less 

 dull gray to grayish brown centrally, bordered with white. The spot 

 behind the eye is duller and indistinct. In Panama from specimens 

 now available there is a definite gap in the range of aenea and G. h. 

 affinis, on the Pacific side from immediately west of the Canal Zone to 

 central Veraguas, and on the Caribbean slope from western Colon to 

 Bocas del Toro. 



The present species appears again in western Colombia where it is 

 recorded from northern Valle (Punto Muchimbo on the Rio San 

 Juan), south through Cauca and Narino to northwestern Ecuador 

 (Esmeraldas, Carondelet, Pambilar, San Javier). This population, 

 widely separated from the nominate race, differs in slightly smaller 

 average size and in faintly brighter color on the breast and sides. 

 Measurements are as follows : 



Males (10 from Colombia and Ecuador), wing 48.2-53.1 (51.5), 

 tail 28.8-33.5 (30.3), oilmen from base 30.0-31.6 (30.8) mm. 



Females (2 from Ecuador), wing 50.2-51.5 (50.8), tail 29.7, 29.7, 

 culmen from base 30.3-31.5 (30.9) mm. 



While the differences are slight, the form may be recognized as 

 Glaucis aenea columbiana Boucard from the Rio Dagua, Valle, Co- 

 lombia, described as Glaucis columbiana by Boucard in his Genera of 

 Humming Birds, December 1895, page 402. 



GLAUCIS HIRSUTA AFFINIS Lawrence: Hairy Hermit, Ermitano 

 Pechicanelo 



Glaucis affinis Lawrence, Ann. Lye. Nat. Hist. New York, vol. 6, 1858, p. 261. 

 (Upper Rio Napo, Ecuador.) 



Similar in tail form and marking to Glaucis aenea, but larger, with 

 back iridescent green ; under tail coverts dull cinnamon-buff to dull 

 white with darker centers. 



Description. — Length 115-124 mm. Male, above including wing 



